Why do human beings die when drowned in water? | Human body lacks a special organ which can take oxygen melted in water.

Why do human beings die when drowned in water? | Human body lacks a special organ which can take oxygen melted in water.

Dead body in waterWhen a person breathes in air, the oxygen in the air is utilized by the body.  But how is that the carbon-di-oxide released through exhaling contains oxygen? Why do breathing stops when a person is drowned in water? Is water not the mixture of Hydrogen and Oxygen?

Utilizing a matter means utilizing the chemical energy of that matter. There is a difference between the oxygen in the air and oxygen in Carbon-dioxide (Co2).  This difference is in the form of chemical energy.  Same way there is a lot of difference between the oxygen in air and oxygen in water.  The oxygen in the air reacts with the nutritional substances and gives energy.  This is not possible with the oxygen present in water.  Human beings do not have a body organ which can take oxygen that is dissolved in water.  So he dies when drowned in water.

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